Drill-socket.



PATENTED DEC. 24, 1907.

N. E. WOODS.

DRILL SOCKET.

APPLICATION FILED .TAN.11, 190v.

wlzzvlixslis NORMAN E; WOODS, OF RICHMOND, VIRGINIA.

DRILL-SOCKET.

' Specification of Letters Patent.

Patented Dec. 24,1907.

Application filed January 11. 1907. Serial No. 351.884-

To all whom it may concern:

Be it-known that I, NORMAN E. WooDs, a citizen of the United States, residin at Richmond, in the county of Henrico an State of Vir inia, have invented a new and useful Dri l -Socket, of which the following is a specification.

This inventionrelates to grip sockets for drills of that type provided with drifts for facilitatin the removal of the drills without danger of battering, or otherwise destroying the tangs of the latter and impairing their hold in the sockets.

The invention has for one of its objects to improve and-simplify the construction and operation of devices of this character so as to be comparatively simple and inexpensive to construct, thoroughly reliable and efiicient in use, and adapted to drive the drills without injuring the tang thereof.

A further object of the invention is the provision of a drill socket having an extractor pin arranged therein which is adapted to ear against the tang of the drill in the socket and to be actuated by a drift key, the extractor pin being arranged to move in the same direction that the drill is driven.

With these objects in View, and others, as will appear as the nature of theinvention is better understood, the same comprises the various novel features of construction and arran ement of parts, which will be more fully described hereinafter, and set forth with particularity in the claims appended hereto.

In the accompanying drawing, which illustrates one of the embodiments of the invention, Fi ure 1 is a longitudinal section of the gri soc et showing the shank portion of the dri l therein and the drift key in the position for driving out the drill. Fig. 2 is a perspective view of the extractor pin, drawn on an enlar ed scale. Fig. 3 is a transverse sectiona view on the line 33 of Fig; 1.

Corresponding parts in the several figures are indicated throughout by similar characters of reference.

. Referring to the drawin A designates the drill socket and B the dril mounted therein, the drill being provided with a standard Morse taper shank 1 fitted in the correspondingly, tapered bore 2 of the socket A. The socket A is provided at its upper end with a tapered shank 3 for fitting in the chuck of a drilling machine. The socket A has a central axially extending cylindrical bore 4 in its body for receiving the extractor pin 5. The said bore 4 is intersected by the transverse passage 6 in the portion of the socket body adjacent the root of the shank 3 and in this passage the drift 7 is adapted to be received so as to engage and actuate the extractor pin 5. Between the bore 4 and the taper bore 2 is the squared hole 8 for receiving the usual tang 9 of the drill B. Intermediate the squared' hole 8 and cylindrical bore 4 is a counterbore 10, which is formed by an ordinary expanding cutter.

The extractor pin is a cylindrical body having a-rounded upper end 11 and a flattened lower end 12, the latter being adapted to impinge on the end ofthe tang 9 While the former is engaged by the drift key 7. In order to prevent the extractor pin from dropping out of the socket A, a retaining screw 13 is employed which extends radially into the socket with its inner end extending between the spaced shoulders 14 of the extractor pin. These shoulders are formed byreducing the middle portion of the pin and they are spaced a su'liiclent distance apart to permit the pin to be moved the necessary distance for driving out the drill. The'drift key 7 is made from round stock and is cut away at one side to form the flat face 15 of the wedge. The key is inserted into the drift hole 6 and is held in such a way that the flat face 15 of the web bears against the upper end of the extractor pin, so that as the key is driven in, the extractor pin will be moved longitudinally in a downward direction to force out the -drill. The extractor pin is free to move up and down, and when the drill is out of the socket, the pin is in its lowermost position and supported in \Vhen the rill is placed in the socket, the upper end of the tang 9 strikes onthe extractor pin and moves upwardly, so that the upper end of the said pin is projected into the drift 0 ening 6. Such isthe normal position of the arts. 'hen the drill is to betaken out, all t at is necessary is to insert the drift key and drive the same in far enough to cause the extractor pin to force out the drill.

The object of the counter-bore 10 is to permit the extractor pin to communicate motion to the drill tang without the risk of coming into contact with the walls oftlie squared bore in which the tang is fitted, or, in other (place by the retaining screw 13.

- the drill or the tool Without coming into contact with the walls of the squared bore.

' From the foregoing description, taken in connection with the accompanying drawings, the advantages of the construction and of the method of operation will be readily a preciated by those skilled in the art to Whic the invention appertains and, while I have described the principle of 0 eration of the inv'ention, together with t edevice which I now consider to be the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative, and that various changes may be made, when desired, such as are within the scope of the c aim.

What is claimed is: The combination of a drill socket having a longitudinally extending bore terminating in a transversely extending drift receiving assage, an extractor in arranged in the ore of the socket and aving a reduced central portion forming spaced shoulders, and a removable retainer in the socket which extends at its inner end between the shoulders to limit the movement of the extractor pin and retain the latter in position.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

NORMAN E. WOODS.

Witnesses:

WM. P. REDD,

Cms. R. SEAL. 

